On September 26, 2011 the National Transportation Safety Board (NTSB) made public the accident investigation report "Pacific Gas and Electric Company Natural Gas Transmission Pipeline Rupture and Fire, San Bruno, California, September 9, 2010"(NTSB/PAR-11/01, PB2011-916501). This report includes NTSB's findings regarding the facts involved in the accident, the cause of the pipeline rupture, an assessment of the PG&E's actions and recommendations that were issued as a result of this accident investigation.